Lookup of 13.158.91.20
IP address: 13.158.91.20
Address type: IPv4
Host or reverse DNS (rDNS): ec2-13-158-91-20.ap-northeast-1.compute.amazonaws.com
Country: 
Japan
13.158.91.20 does NOT belong to a private IP address block.
13.158.91.20 does NOT belong to a reserved IP address block.